Tootfinder

Nur ein wenig Deichfrieden aus der #wattpampa für euch.
#wursternordseekueste

Low-Cost Wideband Tilted Beam Antenna for Millimeter-wave Vehicle Applications
Jiawang Li
https://arxiv.org/abs/2506.08239 https://ar…

Low-Cost Wideband Tilted Beam Antenna for Millimeter-wave Vehicle Applications
To facilitate vehicle coverage for millimeter-wave applications, this communication presents a low-cost, wideband tilted-beam antenna. A novel design is proposed in which a slot antenna is both directly excited and electromagnetically coupled to a monopole array. This slot-monopole configuration is inherently robust against substrate losses, enabling low-cost fabrication while maintaining high realized gain and compact size. Furthermore, the slot-fed structure effectively excites multiple reson…

Idylle herrscht in der #wattpampa.
#wursternordseekuste

Affine Frequency Division Multiplexing Over Wideband Doubly-Dispersive Channels With Time-Scaling Effects
Xiangxiang Li, Haiyan Wang, Yao Ge, Xiaohong Shen, Yong Liang Guan, Miaowen Wen, Chau Yuen
https://arxiv.org/abs/2507.03537

Affine Frequency Division Multiplexing Over Wideband Doubly-Dispersive Channels With Time-Scaling Effects
The recently proposed affine frequency division multiplexing (AFDM) modulation has been considered as a promising technology for narrowband doubly-dispersive channels. However, the time-scaling effects, i.e., pulse widening and pulse shortening phenomena, in extreme wideband doubly-dispersive channels have not been considered in the literatures. In this paper, we investigate such wideband transmission and develop an efficient transmission structure with chirp-periodic prefix (CPP) and chirp-per…

„This year, over 11.7 million people applied for Schengen short-stay visas. Globally, demand rose by more than 13%.
But for African applicants, that just meant more money lost.
Analysts estimate Africans lost €60 million (around US$67.5 million) in visa fees in 2024 alone — just for rejections.“
Via Sham Jaff's excellent newsletter https:…

This https://arxiv.org/abs/2504.12885 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csIT_…

Optimizing Movable Antennas in Wideband Multi-User MIMO With Hardware Impairments
Movable antennas represent an emerging field in telecommunication research and a potential approach to achieving higher data rates in multiple-input multiple-output (MIMO) communications when the total number of antennas is limited. Most solutions and analyses to date have been limited to \emph{narrowband} setups. This work complements the prior studies by quantifying the benefit of using movable antennas in \emph{wideband} MIMO communication systems. First, we derive a novel uplink wideband sy…

#TIL die biologische Welt ist (molekular und physiologisch) chiral und eine gespiegelte Welt ist denkbar, existiert so jedoch nicht auf der Erde.
Spiegelglukose schmeckt nur etwas weniger süß, aber kann nicht vom Körper verarbeitet werden. #Süßstoff

Abendlicher Frieden über den Feldern der #wattpampa.

OpenDPDv2: A Unified Learning and Optimization Framework for Neural Network Digital Predistortion
Yizhuo Wu, Ang Li, Chang Gao
https://arxiv.org/abs/2507.06849

OpenDPDv2: A Unified Learning and Optimization Framework for Neural Network Digital Predistortion
Neural network (NN)-based Digital Predistortion (DPD) stands out in improving signal quality in wideband radio frequency (RF) power amplifiers (PAs) employing complex modulation. However, NN DPDs usually rely on a large number of parameters for effective linearization and can significantly contribute to the energy consumption of the digital back-end in RF systems. This paper presents OpenDPDv2, a unified framework for PA modeling, DPD learning, and model optimization to reduce power consumption…

Hab schon interessante Nachbarschaft hier in der #wattpampa. 🤩